On a Hampton Bay 3 speed ceiling fan does it matter if you install a 3 or 4 speed wall switch? Does it matter what speed the fan is set on to use the 3 or 4 speed wall switch?

If fan has pull chains, set fan to high. Control speed with 3 or 4 speed Wall switch.

Correct. You can not use a wall control with a remote fan.

Ceiling fan remote controls - help and FAQ- Ceiling Fans N More (http://www.ceiling-fans-n-more.com/ceiling-fan-controls.php)